TY - JOUR AU - I. V. Gel'man TI - Stable solvable extensions of linear systems of partial differential operators with constant coefficients in a bounded region JO - Differencialʹnye uravneniâ PY - 1968 SP - 1910 EP - 1914 VL - 4 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1968_4_10_a13/ LA - ru ID - DE_1968_4_10_a13 ER -